http://forums.bimmerforums.com/forum...d.php?t=786298
This link refers to issues of high oil temps in the 335i. Not particularily a comforting series of posts (after the OP's original question). It appears that any of us intending to use the 135i in HPDEs or other track related activities better plan on a LARGE aftermarket oil cooler as BMW seems to feel that the N54B30 was not intended for that kind of driving. Bummer!
